Backend Engineer for DeFi & Custody Systems

Mainframe Finance AG is seeking a skilled engineer to own services interfacing with custody systems and on-chain protocols. You’ll build custody integration layers, coordinate withdrawal flows, and implement DeFi features like AAVE positions and liquidity provisioning.

You will work with Rust (preferred) or Go, leverage PostgreSQL with Diesel, and use gRPC/Protobuf, Kubernetes, Docker and AWS in production. You should understand finality vs confirmation and be comfortable reading smart contracts.